Search results

Filter

Filetype

Your search for "*" yielded 532529 hits

From sightseeing to sunbathing: Changing traditions in Swedish package tours from edification by bus to relaxation by airplane in the 1950s and 1960s

The changing notions of tourism are analyzed by example of Swedish package tours in the 1950s and 1960s, when the dominant means of transportation for package tours changed from buses to airplanes. Simultaneously, Swedish mass tourism developed explosively so that the package tour markets of Scandinavia in the mid-1960s were the largest per capita in Europe. While package tours by bus, dominating

Stroke plane angle controls leading edge vortex in a bat-inspired flapper

The present interest in micro air vehicles has given the research on bat flight a new impulse. With the use of high speed cameras and improved PIV techniques, the kinematics and aerodynamics of bats have been studied in great detail. A robotic flapper makes it possible to do measurements by systematically changing only one parameter at a time and investigate the parameter space outside the natural

Population differences in the structure and coloration of great tit contour feathers

Contour feathers cover most of the avian body and play critical roles in insulation, social communication, aerodynamics, and water repellency. Feather production is costly and the development of the optimum characteristics for each function may be constrained by limited resources or time, and possibly also lead to trade-offs among the different characteristics. Populations exposed to different env

Monitored versus experience-based perceptions of environmental change: evidence from coastal Tanzania

The impacts of climate change are likely to exacerbate many problems that coastal areas already face. In this study, we used multinomial logistic regression to examine human perception of climate change based on a cross-sectional survey of 1253 individuals in coastal regions of Tanzania. This was complemented with time series analysis of 50-year meteorological data. The results indicate that self-

Progression of Early Retinal Dysfunction in Diabetes Over Time: Results of a Long-term Prospective Clinical Study.

We explored signs of retinal dysfunction over time in diabetic subjects before or early in the course of retinopathy. Patients with no, mild, or moderate retinopathy were consecutively recruited and underwent standard automated perimetry, visual acuity measurement, and fundus photography. These examinations and measurements of HbA1c and blood pressure were repeated for up to 5 years from baseline.

Early intraperitoneal metabolic changes and protease activation as indicators of pancreatic fistula after pancreaticoduodenectomy

Background: Ischaemia and local protease activation close to the pancreaticojejunal anastomosis (PJA) are potential mechanisms of postoperative pancreatic fistula (POPF) formation. To provide information on the pathophysiology of POPF, intraperitoneal microdialysis was used to monitor metabolic changes and protease activation close to the PJA after pancreaticoduodenectomy (PD). Methods: In patient

Biolubricant synthesis using immobilised lipase: Process optimisation of trimethylolpropane oleate production

Synthetic esters based on polyols and fatty acids possess suitable technical and ecological properties for applications as biolubricants, and can replace the mineral oil based lubricants in several applications. In this work, the synthesis of trimethylolpropane (TMP) esters with oleic acid using immobilised lipase B from Candida antarctica (Novozym (R) 435) has been studied. TMP-trioleate has suit

Design of recombinant antibody microarrays for membrane protein profiling of cell lysates and tissue extracts.

Generating global protein expression profiles, including also membrane proteins, will be crucial for our understanding of biological processes in health and disease. In this study, we have expanded our antibody microarray technology platform and designed the first human recombinant antibody microarray for membrane proteins targeting crude cell lysates and tissue extracts. We have optimized all key

International Federation of Nurse Anesthetists' Anesthesia Program Approval Process.

The International Federation of Nurse Anesthetists is improving anaesthesia patient care through a voluntary Anesthesia Program Approval Process (APAP) for schools and programmes. It is the result of a coordinated effort by anaesthesia leaders from many nations to implement a voluntary quality improvement system for education. These leaders firmly believe that meeting international education stand

Laser-plasma electron acceleration in dielectric capillary tubes

Electron beams and betatron X-ray radiation generated by laser wakefield acceleration in long plasma targets are studied. The targets consist of hydrogen filled dielectric capillary tubes of diameter 150 to 200 microns and length 6 to 20 mm. Electron beams are observed for peak laser intensities as low as 5x10(17) W/cm(2). It is found that the capillary collects energy outside the main peak of the

Män i kostym : prinsar, konstnärer och tegelbärare vid sekelskiftet 1900

At the turn of the nineteenth century, most men wore suits. One easily gets the impression that all these men look more or less identical; the suits seem to resemble uniforms. Furthermore, compared to the women’s clothing of the period, the suit seems restrained and even drab in its shape and colour. The dissertation takes up this point and examines the claim that all men look alike in a suit. The

Molecular Dynamics Simulations and Neutron Reflectivity as an Effective Approach To Characterize Biological Membranes and Related Macromolecular Assemblies

In combination with other spectroscopy, microscopy, and scattering techniques, neutron reflectivity is a powerful tool to characterize biological systems. Specular reflection of neutrons provides structural information at the nanometer and subnanometer length scales, probing the composition and organization of layered materials. Currently, analysis of neutron reflectivity data involves several sim

Multi-Pitch Estimation Exploiting Block Sparsity

We study the problem of estimating the fundamental frequencies of a signal containing multiple harmonically related sinusoidal components using a novel block sparse signal representation. An efficient algorithm for solving the resulting optimization problem is devised exploiting a novel variable step-size alternating direction method of multipliers (ADMM). The resulting algorithm has guaranteed co

Modelling the contribution of biogenic volatile organic compounds to new particle formation in the Julich plant atmosphere chamber

We used the Aerosol Dynamics gas- and particle-phase chemistry model for laboratory CHAMber studies (ADCHAM) to simulate the contribution of BVOC plant emissions to the observed new particle formation during photooxidation experiments performed in the Julich Plant-Atmosphere Chamber and to evaluate how well smog chamber experiments can mimic the atmospheric conditions during new particle formation

Bigger bodies: Long-term trends and disparities in obesity and body-mass index among U.S. adults, 1960-2008.

Increasing obesity rates and corresponding public health problems are well-known, and disparities across socioeconomic groups are frequently reported. However, the literature is less clear on whether the increasing trends are specific to certain socioeconomic groups and whether disparities in obesity are increasing or decreasing over time. This knowledge sheds light on the understanding of the dri

Effectiveness of Population-Based Service Screening With Mammography for Women Ages 40 to 49 Years Evaluation of the Swedish Mammography Screening in Young Women (SCRY) Cohort

BACKGROUND: The effectiveness of mammography screening for women ages 40 to 49 years still is questioned, and few studies of the effectiveness of service screening for this age group have been conducted. METHODS: Breast cancer mortality was compared between women who were invited to service screening at ages 40 to 49 years (study group) and women in the same age group who were not invited during 1